package com.ban.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import com.sun.tools.corba.se.idl.IncludeGen;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author Ban
 * @version 1.0
 * Create by 2022/1/16 09:47
 */
@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id){
        return "线程池："+Thread.currentThread().getName()+"paymentInfo-OK,id:"+id+"哈哈哈";
    }
    /**
     * @author Ban
     * @date 2022/1/16 11:23
     * 如果出现错误，降级使用 fallbackMethod 中的方法，commandProperties 表示超时最大时间（3秒就降级）
     */

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000")
    })
    public String paymentInfo_TimeOut(Integer id){

        try {
            TimeUnit.MILLISECONDS.sleep(1);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:"+Thread.currentThread().getName()+" paymentINfo_TimeOut，id："+id+"哈哈哈";
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池:"+Thread.currentThread().getName()+" paymentINfo_TimeOut 8001系统繁忙或出现错误，id："+id+"mayayayayayayay!";
    }

    //=========服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),/* 是否开启断路器*/
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),// 失败率达到多少后跳闸）
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if( id < 0 ){
            throw new RuntimeException("***id not < 0");
        }
        String serialNum = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"调用成功，流水号："+serialNum;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id not mid zero,id:"+id;
    }
}
